def main():
parser = argparse.ArgumentParser(description="Test calc")
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
f3d = viscid.load_file(_viscid_root + '/../sample/sample.3df.[0].xdmf')
f_iono = viscid.load_file(_viscid_root + "/../sample/*.iof.[0].xdmf")
b = f3d["b"]
pp = f3d["pp"]
# plot a scalar cut plane of pressure
pp_src = mvi.field2source(pp, center='node')
scp = mlab.pipeline.scalar_cut_plane(pp_src, plane_orientation='z_axes',
transparent=True, opacity=0.5,
view_controls=False)
scp.implicit_plane.normal = [0, 0, -1]
scp.implicit_plane.origin = [0, 0, 0]
# i don't know why this log10 doesn't seem to work
scp.module_manager.scalar_lut_manager.lut.scale = 'log10'
scp.module_manager.scalar_lut_manager.lut_mode = 'Reds'
scp.module_manager.scalar_lut_manager.reverse_lut = True
scp.module_manager.scalar_lut_manager.show_scalar_bar = True
# calculate B field lines && topology in viscid and plot them
seeds = viscid.SphericalPatch([0, 0, 0], [2, 0, 1], 30, 15, r=5.0,
nalpha=5, nbeta=5)
b_lines, topo = viscid.calc_streamlines(b, seeds, ibound=3.5,
obound0=[-25, -20, -20],
obound1=[15, 20, 20])
mvi.plot_lines(b_lines, scalars=viscid.topology2color(topo))
# Use Mayavi (VTK) to calculate field lines using an interactive seed
b_src = mvi.field2source(b, center='node')
bsl2 = mlab.pipeline.streamline(b_src, seedtype='sphere',
integration_direction='both',
seed_resolution=4)
bsl2.stream_tracer.maximum_propagation = 20.
bsl2.seed.widget.center = [-11, 0, 0]
bsl2.seed.widget.radius = 1.0
bsl2.streamline_type = 'tube'
bsl2.tube_filter.radius = 0.03
bsl2.stop() # this stop/start was a hack to get something to work?
bsl2.start()
bsl2.seed.widget.enabled = True
# Plot the ionosphere too
fac_tot = 1e9 * f_iono['fac_tot']
crd_system = 'gse'
m = mvi.plot_ionosphere(fac_tot, crd_system=crd_system, bounding_lat=30.0,
vmin=-300, vmax=300, opacity=0.75)
m.module_manager.scalar_lut_manager.lut_mode = 'RdBu'
m.module_manager.scalar_lut_manager.reverse_lut = True
mvi.plot_blue_marble(r=1.0, orientation=(0, 21.5, -45.0))
# now shade the night side with a transparent black hemisphere
mvi.plot_earth_3d(radius=1.01, crd_system="gse", night_only=True,
opacity=0.5)
mlab.axes(pp_src, nb_labels=5)
mlab.orientation_axes()
mvi.resize([1200, 800])
mlab.view(azimuth=40, elevation=70, distance=35.0, focalpoint=[-3, 0, 0])
# # Save Figure
# print("saving png")
# mvi.mlab.savefig('mayavi_msphere_sample.png')
# print("saving x3d")
# # x3d files can be turned into COLLADA files with meshlab, and
# # COLLADA (.dae) files can be opened in OS X's preview
# #
# # IMPORTANT: for some reason, using bounding_lat in mvi.plot_ionosphere
# # causes a segfault when saving x3d files
# #
# mvi.mlab.savefig('mayavi_msphere_sample.x3d')
# print("done")
if args.show:
mlab.show()
def main():
parser = argparse.ArgumentParser(description="Test calc")
parser.add_argument("--show", "--plot", action="store_true")
parser.add_argument("--interact", "-i", action="store_true")
args = vutil.common_argparse(parser)
f3d = viscid.load_file(sample_dir + '/sample_xdmf.3d.[0].xdmf')
f_iono = viscid.load_file(sample_dir + "/sample_xdmf.iof.[0].xdmf")
b = f3d["b"]
v = f3d["v"]
pp = f3d["pp"]
e = f3d["e_cc"]
mvi.figure(size=(1200, 800), offscreen=not args.show)
##########################################################
# make b a dipole inside 3.1Re and set e = 0 inside 4.0Re
cotr = viscid.Cotr(dip_tilt=0.0) # pylint: disable=not-callable
moment = cotr.get_dipole_moment(crd_system=b)
isphere_mask = viscid.make_spherical_mask(b, rmax=3.1)
viscid.fill_dipole(b, m=moment, mask=isphere_mask)
e_mask = viscid.make_spherical_mask(b, rmax=4.0)
viscid.set_in_region(e, 0.0, alpha=0.0, mask=e_mask, out=e)
######################################
# plot a scalar cut plane of pressure
pp_src = mvi.field2source(pp, center='node')
scp = mvi.scalar_cut_plane(pp_src, plane_orientation='z_axes', opacity=0.5,
transparent=True, view_controls=False,
cmap="inferno", logscale=True)
scp.implicit_plane.normal = [0, 0, -1]
scp.implicit_plane.origin = [0, 0, 0]
cbar = mvi.colorbar(scp, title=pp.name, orientation='vertical')
######################################
# plot a vector cut plane of the flow
vcp = mvi.vector_cut_plane(v, scalars=pp_src, plane_orientation='z_axes',
view_controls=False, mode='arrow',
cmap='Greens_r')
vcp.implicit_plane.normal = [0, 0, -1]
vcp.implicit_plane.origin = [0, 0, 0]
##############################
# plot very faint isosurfaces
iso = mvi.iso_surface(pp_src, contours=5, opacity=0.1, cmap=False)
##############################################################
# calculate B field lines && topology in Viscid and plot them
seeds = viscid.SphericalPatch([0, 0, 0], [2, 0, 1], 30, 15, r=5.0,
nalpha=5, nbeta=5)
b_lines, topo = viscid.calc_streamlines(b, seeds, ibound=3.5,
obound0=[-25, -20, -20],
obound1=[15, 20, 20], wrap=True)
mvi.plot_lines(b_lines, scalars=viscid.topology2color(topo))
######################################################################
# plot a random circle at geosynchronus orbit with scalars colored
# by the Matplotlib viridis color map, just because we can; this is
# a useful toy for debugging
circle = viscid.Circle(p0=[0, 0, 0], r=6.618, n=128, endpoint=True)
scalar = np.sin(circle.as_local_coordinates().get_crd('phi'))
surf = mvi.plot_line(circle.get_points(), scalars=scalar, clim=0.8,
cmap="Spectral_r")
######################################################################
# Use Mayavi (VTK) to calculate field lines using an interactive seed
# These field lines are colored by E parallel
epar = viscid.project(e, b)
epar.name = "Epar"
bsl2 = mvi.streamline(b, epar, seedtype='sphere', seed_resolution=4,
integration_direction='both', clim=(-0.05, 0.05))
# now tweak the VTK streamlines
bsl2.stream_tracer.maximum_propagation = 20.
bsl2.seed.widget.center = [-11, 0, 0]
bsl2.seed.widget.radius = 1.0
bsl2.streamline_type = 'tube'
bsl2.tube_filter.radius = 0.03
bsl2.stop() # this stop/start was a hack to get something to update
bsl2.start()
bsl2.seed.widget.enabled = False
cbar = mvi.colorbar(bsl2, title=epar.name, orientation='horizontal')
cbar.scalar_bar_representation.position = (0.2, 0.01)
cbar.scalar_bar_representation.position2 = (0.6, 0.14)
###############################################################
# Make a contour at the open-closed boundary in the ionosphere
seeds_iono = viscid.Sphere(r=1.063, pole=-moment, ntheta=256, nphi=256,
thetalim=(0, 180), philim=(0, 360), crd_system=b)
_, topo_iono = viscid.calc_streamlines(b, seeds_iono, ibound=1.0,
nr_procs='all',
output=viscid.OUTPUT_TOPOLOGY)
topo_iono = np.log2(topo_iono)
m = mvi.mesh_from_seeds(seeds_iono, scalars=topo_iono, opacity=1.0,
clim=(0, 3), color=(0.992, 0.445, 0.0))
m.enable_contours = True
####################################################################
# Plot the ionosphere, note that the sample data has the ionosphere
# at a different time, so the open-closed boundary found above
# will not be consistant with the field aligned currents
fac_tot = 1e9 * f_iono['fac_tot']
m = mvi.plot_ionosphere(fac_tot, bounding_lat=30.0, vmin=-300, vmax=300,
opacity=0.75, rotate=cotr, crd_system=b)
m.actor.property.backface_culling = True
########################################################################
# Add some markers for earth, i.e., real earth, and dayside / nightside
# representation
mvi.plot_blue_marble(r=1.0, lines=False, ntheta=64, nphi=128,
rotate=cotr, crd_system=b)
# now shade the night side with a transparent black hemisphere
mvi.plot_earth_3d(radius=1.01, night_only=True, opacity=0.5, crd_system=b)
####################
# Finishing Touches
# mvi.axes(pp_src, nb_labels=5)
oa = mvi.orientation_axes()
oa.marker.set_viewport(0.75, 0.75, 1.0, 1.0)
# note that resize won't work if the current figure has the
# off_screen_rendering flag set
# mvi.resize([1200, 800])
mvi.view(azimuth=45, elevation=70, distance=35.0, focalpoint=[-2, 0, 0])
##############
# Save Figure
# print("saving png")
# mvi.savefig('mayavi_msphere_sample.png')
# print("saving x3d")
# # x3d files can be turned into COLLADA files with meshlab, and
# # COLLADA (.dae) files can be opened in OS X's preview
# #
# # IMPORTANT: for some reason, using bounding_lat in mvi.plot_ionosphere
# # causes a segfault when saving x3d files
# #
# mvi.savefig('mayavi_msphere_sample.x3d')
# print("done")
mvi.savefig(next_plot_fname(__file__))
###########################
# Interact Programatically
if args.interact:
mvi.interact()
#######################
# Interact Graphically
if args.show:
mvi.show()
